I just replaced my 1.9 liter engine with a 2.1 and am having some
problems. The van is running way to rich and I'm not sure why. The temp
11 sensor seems to be working, checked it per Bentley. I am using the
2.1 exhaust and the o2 sensor is located in the cat instead of the pipe.
Would this make a difference? Would a vaccumm leak cause it to run rich?
Any Ideas?

TIA Rob Wright